- Title
- Porphyrin nanorods modified glassy carbon electrode for the electrocatalysis of dioxygen, methanol and hydrazine
- Creator
- George, Reama C
- Creator
- Mugadza, Tawanda
- Creator
- Khene, Samson
- Creator
- Egharevba, Gabriel O
- Creator
- Nyokong, Tebello
- Subject
- To be catalogued
- Date Issued
- 2011
- Date
- 2011
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/247388
- Identifier
- vital:51576
- Identifier
- xlink:href="https://doi.org/10.1002/elan.201100081"
- Description
- Porphyrin nanorods (PNR) were prepared by ionic self-assembly of two oppositely charged porphyrin molecules consisting of free base meso-tetraphenylsulfonate porphyrin (H4TPPS42−) and meso-tetra(N-methyl-4-pyridyl) porphyrin (MTMePyP4+M=Sn, Mn, In, Co). These consist of H4TPPS42−SnTMePyP4+, H4TPPS42−CoTMePyP4+, H4TPPS42−InTMePyP4+ and H4TPPS42−MnTMePyP4+ porphyrin nanorods. The absorption spectra and transmission electron microscopic (TEM) images of these structures were obtained. These porphyrin nanostructures were used to modify a glassy carbon electrode for the electrocatalytic reduction of oxygen, and the oxidation of hydrazine and methanol at low pH. The cyclic voltammogram of PNR-modified GCE in pH 2 buffer solution has five irreversible processes, two distinct reduction processes and three oxidation processes. The porphyrin nanorods modified GCE produce good responses especially towards oxygen reduction at −0.50 V vs. Ag|AgCl (3 M KCl). The process of electrocatalytic oxidation of methanol using PNR-modified GCE begins at 0.71 V vs. Ag|AgCl (3 M KCl). The electrochemical oxidation of hydrazine began at around 0.36 V on H4TPPS42−SnTMePyP4+ modified GCE. The GCE modified with H4TPPS42−CoTMePyP4+ H4TPPS42−InTMePyP4+ and H4TPPS42−MnTMePyP4+ porphyrin nanorods began oxidizing hydrazine at 0.54 V, 0.59 V and 0.56 V, respectively.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (10 pages)
- Format
- Publisher
- Wiley Library Online
- Language
- English
- Relation
- Electroanalysis
- Relation
- George, R., Mugadza, T., Khene, S., Egharevba, G.O. and Nyokong, T., 2011. Porphyrin nanorods modified glassy carbon electrode for the electrocatalysis of dioxygen, methanol and hydrazine. Electroanalysis, 23(7), pp.1699-1708
- Relation
- Electroanalysis volume 23 number 7 p. 1699 2011 1521-4109
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Wiley Library Online Terms of Use Statement (https://onlinelibrary.wiley.com/terms-and-conditions)
- Rights
- Closed Access
- Hits: 557
- Visitors: 613
- Downloads: 59
Collections
Khene, Samson Mielie (Assoc Prof)
Nyokong, Tebello (Distinguished Professor)
RU DST/NRF SARChI for Medicinal Chemistry and Nanotechnology
RU Department of Chemistry
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Porphyrin nanorods modified glassy carbon electrode for the electrocatalysis.pdf | 727 KB | Adobe Acrobat PDF | View Details Download |